Keofitt W9 - 5.4 Sampling

KEOFITT W9 USER MANUAL V.4 PAGE 24
choice of valve head). It is therefore important to be aware that the rubber plug (designed for
max. 3 bar(g)) or the steel plug (designed for 12 bar(g)) may be forced out at high speed, if not
seated properly
• For valve heads allowed under ATEX for Group IIGD, Category 2 (zone 1) both handle and top of
valve heads N and Q must be cleaned before use
• Always remember to wear safety goggles when steaming, CIPping, taking samples or any other
operations of the sampling valve
IMPORTANT
• Don’t attach a steam trap to the hose from the valve steam outlet (lower hose piece) as it will
impede the ow of steam and hence the ushing eect, and make the sterilisation dependant
on temperature only, demanding a much longer sterilisation time
• If the steam capacity is low and/or the outlet hose from the valve is short and/or with a large
diameter, the temperature will drop and condensation may occur in the valve chamber. In this
case a counter pressure must be established using a pressure relief valve or a needle valve at the
outlet
• Leave the steam hose in place to prevent contamination from the ambient during sampling. If
removal of steam hose is required, t a sterile rubber or stainless steel plug onto the upper hose
piece
5.4 Sampling
Prepare a recipient for your sample.
For aseptic sampling use steam and a Keott Aseptic Sampling Bag (available in dierent sizes; please
see datasheet on www.keott.dk). Leave the steam hose in place to prevent contamination from the
ambient during sampling.
For all other sampling use a Keott Sterile Sampling Bag or a Spike Bag, which provides a closed ow
path for your sample protected against the ambient. Alternatives are bottles with a screw cap, jars or any
other available container. If removal of steam/CIP hose is required, t a sterile rubber or stainless steel
plug onto the upper hose piece
Take the sample immediately aer cleaning/disinfection/sterilisation performing the following steps: